package org.example.demo_ottery.common.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.TimeUnit;


@Configuration
public class RedisUtil {
    /**
     * RedisTemplate :  先将被存储的数据转换成 字节数组（不可读），再存储到redis中，读取的时候按照字节数组读取
     * StringRedisTemplate ： 直接存放的就是 string (可读)
     * 项目背景：String,String
     */
    private final static Logger logger = LoggerFactory.getLogger(RedisUtil.class);

    @Autowired
    StringRedisTemplate stringRedisTemplate;
    //---------String-------------

    /**
     * 设置值
     * @param key
     * @param value
     * @return
     */
    public boolean set(String key , String value) {
        try {
            stringRedisTemplate.opsForValue().set(key , value);
            return true;
        }catch (Exception e) {
            logger.error("RedisUtil error, set({},{})",key,value,e);
            return false;
        }
     }

    /**
     * 设置带有时限的值
     * @param key
     * @param value
     * @param time
     * @return
     */
    public boolean set(String key, String value ,Long time) {
        try {
            stringRedisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            return true;
        }catch (Exception e) {
            logger.error("RedisUtil error, set({},{},{})",key,value,time,e);
            return false;
        }
    }

    /**
     * 获取值
     * @param key
     * @return
     */
    public String get(String key) {
        try {
            return StringUtils.hasText(key) ? stringRedisTemplate.opsForValue().get(key) : null;
        }catch (Exception e) {
            logger.error("RedisUtil error, get({})",key,e);
            return null;
        }
    }

    /**
     * 删除元素
     * @param key
     * @return
     */
    public boolean del(String... key) {
        try {
            if (null!=key&&key.length>0) {
                if(key.length==1) {
                    stringRedisTemplate.delete(key[0]);
                }else {
                    stringRedisTemplate.delete(
                            (Collection<String>)CollectionUtils.arrayToList(key));
                }
            }
            return true;
        }catch (Exception e) {
            logger.error("RedisUtil error, del({})", key, e);
            return false;
        }
    }

    public boolean hasKey(String key) {
        try {
            return StringUtils.hasText(key) ?
                    stringRedisTemplate.hasKey(key) : false;
        }catch (Exception e) {
            logger.error("RedisUtil error, hasKey({})", key, e);
            return false;
        }
    }
}
